3920402072 has 32 divisors (see below), whose sum is σ = 7685042400. Its totient is φ = 1874928352.

The previous prime is 3920402053. The next prime is 3920402089. The reversal of 3920402072 is 2702040293.

It is a happy number.

3920402072 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×3920402072² = 30739104812283786368, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 77198 + ... + 117474.

It is an arithmetic number, because the mean of its divisors is an integer number (240157575).

Almost surely, 2^3920402072 is an apocalyptic number.

It is an amenable number.

3920402072 is a deficient number, since it is larger than the sum of its proper divisors (3764640328).

3920402072 is an equidigital number, since it uses as much as digits as its factorization.

3920402072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40352 (or 40302 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 29.

The square root of 3920402072 is about 62613.1142173906. The cubic root of 3920402072 is about 1576.8009394373.

The spelling of 3920402072 in words is "three billion, nine hundred twenty million, four hundred two thousand, seventy-two".